Vania



(No Model.) 'v2 sheets-. sheet 1. B. S. REYNOLDS 8v W. A. ORB..

LUBRIGATOB. CUP.

Patented Feb. 25, 1890.

fw. a a3 [1u/e tow.'

/f 62W-, Q79; .WM

(No Model.) 2 Sheets-Sheet 2.

B. s. REYNOLDS an W. A.. OBR.'

LUBRIGATOR OUP.

No. 422,038. Patented FebQz, 1890.

fw" f? d# @WMM fg/@Zz .7%

N. PETERS. PholbLithagmphm Washington. D. C.

UNITED STATES PATENT OEEICE.

BENJAMIN S. REYNOLDS AND VILLIAM A. ORB, OF SORANTON, PENNSYL VANIA.

LUBRICATOR-CUP.

SPECIFICATION forming part of Letters Patent No. 422,038, dated February 25, 1890..

` Application iiled June 27, 1889. Serial No. 315,713. (No model.)

T a/ZZ whom it may concern:

Be it known that we, BENJAMIN S. REY- NoLDs and WILLIAM A. ORE, citizens of the United States, residing at Scranton, in the county of Lackawanna and State of Pennsylvania, have invented certain new and useful Improvements in Lubricator-Cups; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our inventon relates to lubricaiors; and it consists in certain novel constructions, conibinations, and arrangements of part-s here inafter described and specifically claimed, whereby a novel forcing-lubricator for grease or nearly-fixed lubricants is produced, which is very simple in construction and easj,7 of operation.

In the accompanying drawings, Figure l is a vertical central section of our lubricator disconnected from its bearing-support, showing the interior parts as they would appear had the lubricator been screwed to its support and filled and ready for having its pis-' ton unlocked and being set in operation. Fig. 2 is a vertical section of the lubricator and a forcing-spring, taken at a right angle to Fig. l, and representing the same after the piston-rod has been turned or unlocked and as it appears after having been some time in operation. Fig. 3 is an elevation and sectional view of the lubricator, exhibiting the piston of the lubricator at its highest elevation upon the piston-rod, and illustrating how the force of the spring is augmented by lowering the piston-rod and collar after the piston has been moved to about the position 4o shown in Fig. 2. Fig. 4. is a horizontal section of the lubricatcr in the line fr x of Fig. l. Fig. 5 is a broken detail plan view of a portion of a bottom ot the lubricator as seen from above the line y y in Fig. l. iig. 6 isa 45 broken detail vertical section of the bottom portion of the lubricator. Fig. 7 is a similar view to Fig. 6, except that the section is taken at a right angle to said figure. Fig. 8 represents in vertical section a modification ofthe o invention the arts beinGV in substantiall Fig. 9 is a the same condition as in Fig. l.

illustrating how the force of the spring is I augmented by lowering the piston-rod and collar after the piston has been moved to about the position shown in Fig. 2; and Fig. ll is a horizontal section of the said ineditication in the line 5c a," of Fig. 8.

The letter Ain the drawings represents the verticalbody portion of the lubrieator; A', the bottom, and B its screw-cap.

O is a piston, D a hollow piston-rod, E a feed-regulation valve, and F a force-spring.

The body A of the lubricator may be of cylindrical or of other suitable shape, while its bottom A is flat on its upper side and provided with a depression o, on its under side, outside ofwhich is an annular base-ilange as and a central screw-threaded foot portion et', by which latter it is fastened to the bearing to be lubricated. The lubricator by being formed with the depression a will, when fastened to its support or bearing and its annular flange @s is in contact with said support, withstand accidental blows without breaking ott, from the fact that the fulcrum of strain is not, as commonly, at the angle d formed by the junction of the body A with portion d', but at the periphery of the body portion A of the lubricator, and consequently bending or breaking off of the lubricator at said angle a9 is prevented.

The body portion A is closed by a screwcap B, which is provided with stuffing-box b 'for the piston-rod D, and may have a chamber B with a filling-passage closed by a screwplug B3, as shown in Figs. l, 2, and 3l; or it may be closed by an ordinary screw-cap B, as shown in Figs. S,9, and l0.

The piston Q is suitably packed at c and held upon the pistonrod D by a screw fitting d dhthe pistonrod being provided with the screw-thread d, which is of greater longitudi nal extension than the thickness of the piston and the piston provided with the shorter screwdhread di. By this construction the ICQ piston C can be vertically adj usted on the rod D by turning the latter, which can be effected by a hand-wheel D', fastened upon the square end d" of the piston-rod. The piston-rod below the screw-thread d may be provided withr two coupling and locking pins cl2, as in Figs. l, 2, and 3;.or with a coupling and locking screw a5, of reduced diameter, as in Figs. 8 and 9.

In the bottom A of the body A, Figs. l and 2, the passage for the lower stem of the piston-rod is enlarged vby cutting an annular groove a4 below the surface of the said bottom A', and thev lockingpins d2 enter this groove by means of two diametrically-opposite'vertical passages d3, and when said groove is thus entered by said pins and the pins are turned out of coincidence with the passages',

asillust'rated in Fig. l,by turning the pistonrod slightly the piston will be locked down so that the lubricator may be filled with lubricant without inconvenience from the upward pressure of the spring against the piston.

Instead of the locking device just described, the said piston-rod passage may be provided with an inner screwthread a and the pistonrod locked by means of the screw-thread t5 entering the screw thread a, as shown in Fig. 8.

At the shoulder formed by the screw thread d a collar d3 is provided upon the piston-rod and fastened by'frictional contact or in any other suitable manner, and another shoulder d is provided on the piston-rod at the upper termination of the screw-thread d, and between the shoulder b4 and collar d3 the piston is movable up and down on the piston-rod by means of the male screw d and female screw-thread d. The conical spring F is interposed between the bottom A of the body portion A and the collar d3, and by means of said spring the piston is forced upward against the lubricant in the said body portion above the piston. ward through and beyond the stuffing-box b of the screw-cap B, and also down through and beyond the screw portion a at the bottom of the said body portion A. The shoulder Z4 is provided with anumber of diametrically` opposite passages d5, which connect with an axial passage d extending downward into the bearing to be lubricated, said passages serving for conducting nearly solid lubricant from the chamber above Ithe piston down to the bearing to be lubricated. The passage of the lubricant from the lubricator is regulated or shut off by means of a valve'E, fitted in the upper portion of the piston-rod, and consisting of a rod e, with a nicked top c', screw-thread e2, and a conical lower valve-face e8, which latter is fitted to a corresponding valve-seat e4 at the upper termination of the passage d6, while the adjusting-screw thread e2 is fitted into the corresponding female screw-thrcad in the upper end of piston-rod D.

When the lubricator is to be put into use, the piston C is screwed down upon the piston The'piston-rod D extends up`v rod D until it comes in contact with the collar d'3, whereupon the piston, its rod, and the collar d3 are pushed down against the spring F until the pins d2 pass through the passages d3 and come horizontally in range with the annular groove d4, when the piston-rod is turned so as to move the pins into the groove and lock the piston down near the bottom of the bottom portion A; or the said parts are pushed down until the screw-thread a5 touches the screw-threaded portion a6 of the body portion, whereupon the piston-rod is turned into said screw-threaded portion a until itis locked so as to be capable of withstanding the tension of the spring. If the locking is effected by the pins (Z2, the collar and piston do not change their relation to one another; but if it is effected by the screw-threads a5 a6 the collar cl3 is moved downward away from the piston a short distance, the piston, owing to its frictional resistance against the inner surface of the body portion A', being kept from revolving. The screw-plug B3 of Vthe cap is now removed and the body portion filled with lubricant; but, if desired, the

vfilling operation maybe effected by remov ing the cap. The screw-plug B3 or cap B being replaced, the piston-rod D is unlocked by turning the pins d2' in line with the passages a3 or by unscrewingit from the threaded portion a? of the bottom of the body portion, and when thus adjusted the collar and piston occupy either the4 position relative to one another shown in Fig. 'l orFig. 9. The valve E is now raised by means of the screw e2, so as to open passages d5 d, and the piston and piston-rod, under the adjustment of the parts as described being free to be forced up by the spring D, said spring by exerting ,its power upon the collar d3, piston- -rod D, and piston C gradually forces out the lubricant from within the body portion A through the passages d5 into' the passage d6 of the piston-rod, from whence it goes into the bearing to be lubricated, the quantity discharged in a given time beingy governed by the size of the opening between thev'alvesurface c3 and valve-seat e4. Whenever` the lubricant becomes consumed to such an eX- tent as to render the force of the spring too weak for effectively raising the piston farther and thereby forcibly discharging" the lubri cant, the collar cl3 is screwed down upon the spring away from the piston, as illustrated in Figs. 3v and 10, and thereby the upward force of the spring-upon the piston augmented and a more forcible discharge effected during the latter portion `of the stroke ofthe piston. In order to avoid resistance from air iii the chamber containing the springy F` a venthole a7 is provided in thebody port-ionA below the piston, and in order to indicate the upA ward progress of the piston underthe force of the springa sca-le (t7 is provided upon the pistonnod, and thus the effect of adjusting the valve lilv for increasing ordecreasing the feed of the lubricant can be immediately obI loo served, and it further adjustment is necessary it can by means of the scale be made with certainty, and in order to facilitate the register of the pins d2 with the passages d3 index-marks l and 2 may be provided, as shown in Fig. u

In operating our lubricating-cup it does not require that the cap and the piston shall be removed together; On the contrary, when the cap is removed the piston is locked down in the cup and the cup tilled with the piston within it; or if the cap should not be removed Y the piston is locked down in the cup and the cup filled through the opening at B3 while the piston is within it. 'Ihe means for adjusting the force of the spring, as well as the spring, can also remain in the cup While the cap is being removed independently of the piston. Thus it will be seen that our invention differs materially from those structures wherein the piston is connected with the cap of the lubricatoncup, and both piston and cap mustbe removed together for thepurpose of filling the cup; also, thatV it diifers from those constructions wherein the springregulating collar is arranged in an extension of the cap of the cup, and the cap, piston, and regulating device are removed together when it is desired to iill the cup.

Itwill be seen from the aforegoing description and accompanying drawings that the construction of a lubricator in accordance with our invention requires very little laborA and very little skill, while by reason of its easy operation and eiiiciency it may be entrusted to workmen of less than average capa bilities and cantiousness.

berB, and plug B3, hollow piston-rod D,hav ing a shoulder (Z4, adjustable piston C, and a spring F, said shoulder being provided. with passages for conducting the lubricant into a passage in said piston-rod above the piston and therefrom to a point below the piston, substantially as described.

The combination, with a lubricator-cup having a cap removable independently of the piston, of the piston-locking mechanism described, whereby the piston is held down While the lubricator is being filled with lubricant with the piston C, hollow piston-rod D, having` an oil-passage and forcing-spring F, substantially as described.

4. The combination of the piston-rod D, carrying piston C and having pins d2, and the cup having' bottom A', provided with the passages o and annular groove d4, substantially as and for the purpose described.

5.V The combination of the bodyA of the lubricator, spring F, piston C, and piston-rodD, having a passage d5 above the piston, and a conilectingpassage (Z6, leading out below the same, substantially as and for the purpose described. G. The combination, with the hollow pistonrod D, carrying piston C and having passages d5 d6 and screw-threaded and provided with a valve-seat e4 above the piston, of the valve E, having valve-face e3 and screw-thread e2, substantially as described.

7. The combination, with the bodyA of the lubricator having a cap B, of the spring F, piston C, and hollow piston-rod D, having a scale Z7 providedwith down and lateral pas- BENJAMIN S. REYNOLDS. WILLIAM A. ORR.

Witnesses:

RICHARD NroHoLLs, JOHN L. JENKINs. 

